Description

Specifications

Reach RS4 Specifications

Channels: 672
GNSS Bands: L1/L2/L5/L6 (GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC)
RTK Accuracy: Horizontal: 7mm + 1ppm; Vertical: 14mm + 1ppm
Tilt Compensation: 2mm + 0.3mm/ tilt
Fix Time: ~5 seconds
Update Rate: Up to 10Hz
Radios: 868/915MHz (LoRa), 410470MHz (UHF, 2W)
Connectivity: Bluetooth 5.1, Wi-Fi, RS-232, USB-C
Ingress Protection: IP68
Battery Life: 16hrs (RTK with tilt), 22hrs (logging)
Operating Temperature: -40F to +149F (40C to +65C)
Storage: 16GB
Position Output: NMEA, LLH/XYZ
Weight: 2.11 lbs.

Reach RS4 Pro Specifications

Channels: 672
GNSS Bands: L1/L2/L5/L6 (GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC)
RTK Accuracy: Horizontal: 7mm + 1ppm; Vertical: 14mm + 1ppm
Tilt Compensation: 2mm + 0.3mm/ tilt
Dual Cameras: Full HD CMOS, factory-calibrated
AR & Image Tools: Stakeout in AR, measure from images via Emlid Flow
Update Rate: Up to 10Hz
Radios: 868/915MHz (LoRa), 410470MHz (UHF, 2W)
Connectivity: Bluetooth 5.1, Wi-Fi, RS-232, USB-C
Ingress Protection: IP68
Battery Life: 16hrs (RTK with tilt), 22hrs (logging)
Operating Temperature: -40F to +149F (40C to +65C)
Storage: 16GB
Position Output: NMEA, LLH/XYZ
Weight: 2.11 lbs.

Product Description

The Emlid Reach RS4 series is a new generation of all-band RTK GNSS receivers designed to deliver survey-grade accuracy with speed, simplicity, and modern field workflows. With support for all satellite constellations and full-frequency tracking (L1/L2/L5/L6), the RS4 and RS4 Pro offer centimeter-level precision even in the most challenging conditionsurban canyons, dense canopy, or near metal structures.

Each receiver is powered by a 672-channel GNSS chip and next-gen IMU-based tilt compensation that activates in seconds and stays accurate throughout the dayno calibration or magnetometer required. The custom quick-release mount ensures a firm, backlash-free connection to your survey pole, critical for accurate tilt measurements.

Built for the field, both models feature a rugged magnesium alloy body, IP68 protection, and 16-hour battery life with USB-C charging. Emlid Flow, the companion app for iOS and Android, provides streamlined data collection, stakeout tools, real-time cloud sync, and project collaboration.

Why Choose the RS4 Pro Receiver?

The Reach RS4 Pro builds on the RS4 platform with dual Full-HD cameras that enable:

AR Stakeout: Overlay CAD data in augmented reality with real-time visual guidance, even in complex or congested job sites.
Measurement from Images: Capture and calculate the coordinates of hard-to-access points, like facades, areas behind fences, or across roadwaysdirectly from photos taken on site.

These advanced capabilities reduce setup time, increase crew efficiency, and open up new ways to measure where traditional GNSS tools cant reach.